Details

---

BUY 74F189PC https://www.utsource.net/itm/p/1533464.html
64-Bit Random Access Memory with 3-STATE Outputs
The 74F189PC is a 16-pin DIP (dual in-line package) integrated circuit manufactured by National Semiconductor (NSC). It is a 4-bit synchronous binary up/down counter with an asynchronous clear. Description: The 74F189PC is a 4-bit synchronous binary up/down counter with an asynchronous clear. It has four data inputs (A, B, C, and D) and four outputs (QA, QB, QC, and QD). The counter has two clock inputs (CP and UP/DOWN). The CP input is used to clock the counter, while the UP/DOWN input determines the direction of the count. The counter can be cleared by applying a low signal to the CLR input. Features: 4-bit synchronous binary up/down counter Asynchronous clear Two clock inputs (CP and UP/DOWN) Four data inputs (A, B, C, and D) Four outputs (QA, QB, QC, and QD) Applications: The 74F189PC can be used in applications such as frequency dividers, frequency counters, and digital clocks. It can also be used in applications that require counting up or down, such as in digital timers. (For reference only)